I think I installed another unit's update or a bad file onto my z120bt..... I've been trying to fix it for months. I can play a disk that's already in there when i have either my sd or usb in with condhack on it. Otherwise, it just says no applicable program. I've tried to place updates on my SD but it just says update starting but quickly states that "update failed" and restarts. It continues to play through that lil sequence over n over in a loop and it's quite stressful. On boot up it says 2013 instead of 2009 as before. I do not have User files or NDATA files on unit anymore for one reason or another but have them on my computer I'm sure of it. . . . .I'm pretty desperate and don't know what to do. SysUcom displays 8.01 or 8.05 and when I attempt to force write with older versions everything says "ready" besides EU90BOT. Instead of "ready" it displays [Write Errr B]......
I'm a noob who has messed up his unit by accidently downloading hackmode when I wasn't aware of it's full abilities and potentially damaging use...... If anyone could please point me in the right direction I will be forever greatful... I mean, I have spent countless hours sorting and sifting, reading and noting every post and thread on here for a solution and I just can't seem to get it down. Maybe I'm too stupid but electronics are not my expertise and I think I shouldn't have tampered with the damn thing. After about 2 months with my unit like this I'm reaching out for a helping hand on this site after trying to figure it out myself. I have hope for sure due to the fact that the unit still plays discs(the one that is in there), and I can navigate through testmode still and developer mode.

For the last year, Ive been dealing with a finicky PAC SWI-PS control module. I re-programmed this thing about 50 times and still couldn't get it to work properly. What did I do to figure out the solution to this issue? I'll get to that in a minute.
Background:
I drive a 2007 Camry equipped with a Z110 (upgraded to Z130 & bypassed), HD-Radio add-on (GEX-P20HD), traffic tuner add-on (ND-TMC10), PAC SWI-PS steering wheel control module, jailbroken iPhone 4S, and a few custom add-ons [modified dash kit with LED indicator light & IR senesor for hidden DTV converter & antenna, iPhone dock with hidden wiring, full internal LED bulb replacements, LED footwell lights, HID headlight kit, DVD headrests with built-in Nintendo games & wireless headphones, and Viper alarm with iPhone remote start]. I also managed to design a high powered system with two amps (1000W RMS) and two hard-hitting 12" subs in the trunk, all on stock battery/alternator (yes, this is possible). I plan to make a youtube video of my car, I just haven't taken the time to do so; I will keep everyone posted.
Now, back to why I wrote this thread; the PAC SWI-PS. As I approach police cars on my daily drive, I have trouble turning off the video thats running while the car is in motion. Sometimes I just want to switch the source in a pinch, but i have to do a few touch screen motions to do so. All because my PAC SWI-PS decides NOT to work at any given moment. But this is no longer an issue. What did I do to remedy the situation?
<< ........drumroll .......... >>
I programmed the PAC SWI-PS with the car running, headlights on, and the AC (or heat) at full blast. Why does this work? Because the PAC module uses voltage-dividing levels to determine which button is pushed. If it is programmed with the car cold, the problem occurs when the headlights are turned on, or the AC/heat is turned on, the voltage-dividing levels are changed. I found this out by noticing one of my VOLUME buttons on my steering wheel would consistently act as my SOURCE button when the headlights were on (very irritating). This indicates the values of each button has shifted, some of which was out-of-range for the desired voltage levels. Thus, with the headlights & AC/heat on while programming, the voltage levels of the steering wheel buttons are still within the desired range when the lights are off.
Conclusion:
I am now so happy with my system responding to my every wish.
Thank you for reading my post.